72 lines
2.7 KiB
Go
72 lines
2.7 KiB
Go
// GoToSocial
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// Copyright (C) GoToSocial Authors admin@gotosocial.org
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// SPDX-License-Identifier: AGPL-3.0-or-later
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package dereferencing
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import (
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"net/url"
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"sync"
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"codeberg.org/gruf/go-mutexes"
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"github.com/superseriousbusiness/gotosocial/internal/media"
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"github.com/superseriousbusiness/gotosocial/internal/state"
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"github.com/superseriousbusiness/gotosocial/internal/transport"
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"github.com/superseriousbusiness/gotosocial/internal/typeutils"
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)
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// Dereferencer wraps logic and functionality for doing dereferencing
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// of remote accounts, statuses, etc, from federated instances.
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type Dereferencer struct {
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state *state.State
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converter *typeutils.Converter
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transportController transport.Controller
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mediaManager *media.Manager
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derefAvatars map[string]*media.ProcessingMedia
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derefAvatarsMu mutexes.Mutex
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derefHeaders map[string]*media.ProcessingMedia
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derefHeadersMu mutexes.Mutex
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derefEmojis map[string]*media.ProcessingEmoji
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derefEmojisMu mutexes.Mutex
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handshakes map[string][]*url.URL
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handshakesMu sync.Mutex // mutex to lock/unlock when checking or updating the handshakes map
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}
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// NewDereferencer returns a Dereferencer initialized with the given parameters.
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func NewDereferencer(
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state *state.State,
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converter *typeutils.Converter,
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transportController transport.Controller,
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mediaManager *media.Manager,
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) Dereferencer {
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return Dereferencer{
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state: state,
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converter: converter,
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transportController: transportController,
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mediaManager: mediaManager,
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derefAvatars: make(map[string]*media.ProcessingMedia),
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derefHeaders: make(map[string]*media.ProcessingMedia),
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derefEmojis: make(map[string]*media.ProcessingEmoji),
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handshakes: make(map[string][]*url.URL),
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// use wrapped mutexes to allow safely deferring unlock
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// even when more granular locks are required (only unlocks once).
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derefAvatarsMu: mutexes.WithSafety(mutexes.New()),
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derefHeadersMu: mutexes.WithSafety(mutexes.New()),
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derefEmojisMu: mutexes.WithSafety(mutexes.New()),
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}
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}
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